Patent US2928223A successfully refreshed from Google Patents.
US2928223A
Expired / Lapsed
US
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Tractor mounted rotary mower attachment
Assignee: Danuser Machine Works Inc
•
Filing: 1956-07-20
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Granted: 1960-03-15
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Expires: 1976-07-20
Abstract
No abstract record available.
Inventors
- 👤 Walter W Danuser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:12
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/64; A01D34/66; A01D34/661; Y; Y10; Y10S; Y10S56/00; Y10S56/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2514407A
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US2688833A
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US2659191A
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US2690040A
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US2756833A
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US2681536A
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US2801510A
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US2711624A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |